1. (

• knocker ,

) (Yiddish) a big shot who knows it and acts that way; a boastful immoderate person ;

2. (

• knocker ,

) a person who knocks (as seeking to gain admittance); "open the door and see who the knocker is" ;

3. (

• detractor ,
• disparager ,
• depreciator ,
• knocker

) one who disparages or belittles the worth of something ;

4. (

• breast ,
• bosom ,
• knocker ,
• boob ,
• tit ,
• titty

) either of two soft fleshy milk-secreting glandular organs on the chest of a woman ;

5. (

• knocker ,
• doorknocker ,
• rapper

) a device (usually metal and ornamental) attached by a hinge to a door ;